A surgical scar is the result of a cut (incision) made during surgery. The scar may be of any size, depending on the operation that was done. Often the scar heals into an area of thick, colored skin called a keloid (say "KEE-loyd"). Surgeons try to make scars as small and unnoticeable as possible.
Keloids are firm, raised, and shiny. They can grow larger over time. On lighter skin, the colors vary from slightly pink to bright red. On darker skin, keloids may be the same color as the nearby skin or darker. They can be itchy and painful. When exposed to the sun, they can become darker.